Bug 14252: Follow up noprint and default values

Bug 14252: Follow up noprint and default values

TEST PLAN
---------
0) Back up your DB
1) open OPAC
   -- should only have languages in footer.
      Annoyingly below the fold.
2) Drop your koha database, and create a blank one.
3) Apply all patches
4) Go to staff client and do an install of koha, with
   all the dummy data.
5) Once installed, refresh your OPAC page
   -- language selector position should be in footer
      still as expected.
   -- this confirms the sysprefs.sql change.
6) Restore your DB
7) run the updatedatabase.pl script
8) Refresh the OPAC page
   -- should still only have languages in the footer.
   -- this confirms that upgrade won't change anything.
   -- this confirms the atomic update.
9) git diff origin/master
   -- the opac-bottom.inc difference should only
      have changes around a SET, IF, and END.
      This confirms the noprint was fixed.
10) In the staff client, change the OPAC system preference,
    OpacLangSelectorMode, to all three values.
    For each value, refresh the OPAC page, and confirm the
    position of the language selector.
    -- should work as expected.
11) run koha qa test tools

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Indranil Das Gupta (L2C2 Technologies) <indradg@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>